M4 The
Periodic Table: Halogens
Slide 6 of 45
Why DIAtoMIc?
Why are the Halogens DIATOMIC ?
Fluorine, like all
the Halogens is in GROUP 7
Every fluorine atom has 7 valence electrons in its outer shell.
Electronic
configuration: 2, 7
outer
shell NOT full
energetically unstable
Electronic
configuration: 2, 7
outer
shell NOT full
energetically unstable